Indoor Location-based Emergency Call Service System for Ships using VLC Technology

Abstract

Due to metallicity of materials, a vessel has a limitation to adopt RF-based wireless communication technologies for the inner communication means. Visible Light Communication(VLC) can be a sound alternative to dissolve such a limitation. Using a visual light as a transmission medium, VLC is free from radio interferences and restriction of radio usages which are typically related to RF-based wireless communications. In addition, VLC can not only require the facility cost relatively low because of being possibly converged with existing LED illumination, but also be harmless to the human body. This paper proposes an indoor location-based emergency call service system solution for ships using the VLC technology that supports 256Kbps data rate and 5m transmission distance. This paper presents real implementation and testing results of the solution which verifies the propriety of the proposal.

Development of an Ultrasound Technology-Based Indoor-Location Monitoring Service System for Worker Safety in Shipbuilding and Offshore Industry

“…Visible-light communication that uses LEDs has been studied as an indoor location recognition technology that utilizes broadband characteristics from 385 to 789 THz. However, communication uses the lights installed in the ship, so the process is not flexible to changes of bulkheads, is difficult to use before the light source is installed, and can be degraded by interference with other light sources [24].…”